[rewrite] Major changes to code - switched to postgres, added initial backend docker files

backend/app/database/models/disabled/cart_model.py

@@ -0,0 +1,15 @@
+from sqlalchemy import Column, Integer, Float, TIMESTAMP, ForeignKey
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+from .base_model import Base
+
+
+class Cart(Base):
+    __tablename__ = "cart"
+
+    cart_id = Column(Integer, ForeignKey("user.id", ondelete="CASCADE"), primary_key=True)
+    total = Column(Float, nullable=False)
+    last_updated = Column(TIMESTAMP, onupdate=func.now, nullable=True)
+
+    user = relationship("User", back_populates="cart", foreign_keys=[cart_id])
+    cart_entries = relationship("CartEntry", back_populates="cart")

backend/app/database/models/disabled/purchase_model.py

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+from sqlalchemy import Column, Integer, TIMESTAMP, Float, ForeignKey
+from sqlalchemy.sql import func
+from sqlalchemy.orm import relationship
+from .base_model import Base
+
+
+class Purchase(Base):
+    __tablename__ = "purchase"
+
+    id = Column(Integer, primary_key=True)
+    user_id = Column(Integer, ForeignKey("user.id"), nullable=False)
+    used_coupon_id = Column(Integer, ForeignKey("coupon.id"), nullable=True)
+    date_purchased = Column(TIMESTAMP, nullable=True)
+    total = Column(Float, nullable=True)
+
+    user = relationship("User", back_populates="purchases", foreign_keys=[user_id])
+    coupon = relationship("Coupon", back_populates="purchases", foreign_keys=[used_coupon_id])
+    purchase_entries = relationship("PurchaseEntry", back_populates="purchase")

backend/app/database/models/disabled/wishlist_model.py

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+from sqlalchemy import Column, Integer, Float, TIMESTAMP, ForeignKey
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+from .base_model import Base
+
+
+class Wishlist(Base):
+    __tablename__ = "wishlist"
+
+    id = Column(Integer, ForeignKey("user.id", ondelete="CASCADE"), primary_key=True)
+    total = Column(Float, nullable=True)
+    last_updated = Column(TIMESTAMP, onupdate=func.now, nullable=True)
+
+    user = relationship("User", back_populates="wishlist", foreign_keys=[id])
+    wishlist_entries = relationship("WishlistEntry", back_populates="wishlist")